Mill.



A. C. BRANTINGHAM.

MILL.

APPLICATION FILED OCT. 23. I9l6.

- 1 ,282, 1 8 Patented Oct. 22, 1918;

40 projections 11 and 12 are three relatively ro- 11, "and are carriedcone section which has,

. UNITED STATEg PATENT OFFICE.

ALLEN C. BRANTINGHAM, OF TOLEDO, OHIO, ASSIGNOR TO NORDYKE & MARMON COM-PANY, OF INDIANAPOLIS, INDIANA, A CORPORATION .0 INDIANA.

MILL.

To all whom it m concern:

Be it known that I, ALLEN O. BRANTING- HAM, a. citizen of the UnitedStates of erica, residing at Toledo, Lucas county,

,Ohio, have invented new and useful Mills,

of which the following is a specification.

This invention relates to mechanism for subdividing or disintegratingmaterial.

This invention has utility, especially in the further breaking up offractured particles and flakes, as of cereal, for instance'in flour millwork, between'the mills and sifters.

Referring to the drawings F igure 1 is a;longitudinal medial sectionthrough an embo'dimentof the device as a scroll grinder or mill; and

Fig. 2 is an elevation of the discharge end of the device, parts beingbroken away.

The base 1v carries the long bearing 2 for the shaft 3, which has at oneoutboard end 4 the driving pulley 5. This shaft 3, at its inner overhungend, carries the enlarged hub; 6,upon which ismounted the pair ofscrolls 7, forming. the double pitch rotary scroll impellermeansdisposed in the hous ing 8 carriedby the base 1. This housing 8 hasthe supply chute 9 providing an intake openingformaterial to be treated.At its opposite endthe housing carries the stepped on the flattenedradially extending portions thereof,lan outer series of four pins 11,and an inner series of four longerpins 12,the longer pins being on thestepped portion a shorter distance from the axis of shaft 3. a I areradially alined as to their axes in their Pin 11 and pin 12 pairs ofpins 11 and axial extent, andsuch distances about the 12 are disposed at90 housing 8. I v

opposingthese axially extending pins or tatable sets. of pins carried bythe scroll means andits hub. Theouter and shortest pins 13, and thenextset of pinsl-lr are disposed to have'project therebetween the pinRadially' inward from these pins 13, 14:, carried by thescroll' 7 is astill longer pin 15 carried by the hub 6 and extending axi-Specification of Letters Patent.

Application filed October 23, 1916. Serial No. 127,070.

by one of the scrolls 7.

Patented Oct. 22, 1918.

ally in the space within the region of the pins 12. Each of the twoscrolls 7 has one set of pins 13, 141, with the pin 15 on the hubinwardly therefrom, so there are two of each of these pins 13, 14, 15,diametrically arranged.

Opposing this stepped cone 10 is the reverse cone 16 mounted on the hub17, having axially radially extending wings 18 for pins 19 on the hub 6,whereby, in the rotation of the hub 6, the cone member 16 is rotatedwith this hub 6 and relatively to the cone member 10. This cone member16, with its hub 17, is loosely mounted on the stem 20 coaxial with theshaft 3. The stem is rigidly supported against lateral vibration by thebearing 21, but is free to rotate therein. This bearing 21 is carried bythe extension 22 of the housing which provides the dis charge way 2 1from the grinder or mill, the controlled discharge outlet being betweenthe outer flare portion of the cone 16, and the inward flare of thereverse cone shaped member 10. This adjustable clearance annulardischarge opening between the pair of cone members, is controlled by ayielding adjustment; The hand wheel 25 may be rotated to compress thespring 26, and thus adjust the yielding resistance as may be desired inthe character of material and feed rate thereof from the mill, bycausing the collar 27 on the shaft 20 to coact with the hub 17.

The thrust from the discharge cone may be taken up from the scrolls bythe anti-friction ring bearing 28 coacting with the lubrieating collar29 on the shaft 3. The rate of rotation of the scroll means may bevaried from 400 to 1,000 R. P. M. in accordance with the material beinghandled, and this material is impelled into the stepped cone member 10,wherein the pins laterally swish the material backward and forward, thesteps in the member 10 precluding any direct sliding of surface contactmaterial to the discharge. There is accordingly effective disintegrationat the projections or pins and a uniform discharge between therelatively rotatable reverse cones 10, 16. Further, this'adjustedcontrol of the cone 1% is a unit in itself apart from the scrollimpellers and the shaft mounting.

The device is accordingly one of simple structure and which may bereadily installed for edective operation of great capacity with aminimum of upkeep.

Whatis claimed and it is desired to secure by United States LettersPatent is: V

l. A scroll disintegrator embodying a I housing, scroll means therein,axially extending projecting means carried by the scroll means, andopposmg pro ecting means earned by the housing, said pro ecting meansbeing in series of difierent lengths.

2. A scroll disintegrator embodying a housing, scroll impeller means inthe housing and providing radial series oi axially extending pins, saidhousing being stepped, and opposing axially extending pins mounted onthe steps of the housing in a plurality of radial series staggered tointerfitwith the pins of the scrollmeans.

3. A disintegrator embodying rotary impeller means, a pair of oppositelytapering members providing a discharge opening axially ofthe impellermeans, and an agitator device between the means and opening forinterrupting material travel from the means,

to the opening, said device including inter fitting concentric series ofpins.

4:. A disintegrator embodying impeller means, a pair of conical membersproviding adjacent the larger diameter of one member and the smallerdiameter of the other mem: her an annular discharge opening from themeans, and radially spaced projections parallel to the axis of one ofthe conicalmembers, said'projections extending transversely of a commonradial plane for intercepting material travel from the means to theopenin I 5; A- disintegrator embodying impeller means, a pair ofreversely conical members providing adjacent the larger diameter of onemember and the smaller diameter of the other member, an annulardischarge opening from the means, and axially overlapping relativelymovable series of projections for agitating the material in its travelfrom the means to the opening.

6. A disintegrator embodying impeller means, land a housing providing achamber for the impeller means, said impeller means being rotatable andprovided with an annular series ofpins,saidhousing providing aconicalportion for said chamber, said conical portion having materialflow intercepting steps extending axially of the impeller means, andpins on said steps interfitting with the impeller pins to interruptradial in ward material travel.

7. A disintegrator embodying a housing forming a chamber having anannular dis-.

wearer charge opening, impeller means in said '85 chamber for directingmaterial flow toward the discharge opening, said housing being providedwith a conical portion extending away from, the discharge opening and;comprising successive materialflow intercepting continuous annularsteps, pins on said steps, and opposing interfitting pins mounted torrotation as to the housing-carried-pins.

8. A disintegrator embodying impeller means, a conical first memberhaving perpendicular to the cone axis material flow intercepting stepsefiective to interrupt mate rial travelthereover, a relatively rotatableoppositely comcal'second member coacting with the conical first memberto provide adg, jacentthe smaller diameter of the first mem her andthejlarger dia meter of. thesecpnd member, an annular. discharge.openingirom the impeller means, andmeans for yieldably. adjusting theclearancehetween the bers.

a rotary mpeller. m l embedriaa an. overhanging shaft, rotary impellermeans thereon, a housing, for the impeller. means, said housing yondempel er means. be; ing provided with ,a series f concentnestepsterminating djacent i s min mumdlamet in an annular opening, having itsmaximum diameter adj acent the minimum diam ter region of thesteppedport'on of'the lrusmg 95 and a member in said opening: tapering"toward the Shaft a ppesitslr rom: he,

steps of the housing, andgmeansior-adjusting the member independently.f? th lilr peller means for controllingdiscl1arge ,.fmmi 109 thehousing.

10. A scr ll i integra ion embodyi g'aai overhanging shaft, rotaryscroll impellr; means thereon, a housing thereiori hiilll ilgaw conicalportioninvvardly st pp dgto. fi Flili: nate adj acentitsininimumdiametercin a co; axial discharge way, and movalile means.having sliding. connection with the;..$lia';tt;.j centered by the shaftand; operable ,for ad; justing the clearance of th d'scliargevrav.

p the impeller means: and intermediate-"the .ra

dial extent of the housing.

12. A, d sintegrator embodying .a housing provided with anannularoutlet, a scroll for lmpelling material toward said outlet, means formounting the scroll holding the scroll against other than rotarymovement in the 5 housing, said housing tapering inward by steps fromthe fixed position of the scroll toward the outlet, pins projecting fromthe housing steps toward the scroll, pins mounted on the scroll andprojecting between the housing carried pins, and. a gate connected 10 torotate with the seroll but movable axially of the scroll for varying theeffective opening of the outlet.

In witness whereof I affix my signature.

ALLEN O. BRANTINGHAM.

flopiel of this patent may be obtained for five cents each, byaddressing the Commissioner of ratentl, Washington, D. 0.

